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发明名称
CHECKER-WORK CONSTRUCTION
摘要
申请公布号
CA301254(A)
申请公布日期
1930.06.17
申请号
CAD301254
申请日期
申请人
THE SHEA-WHELPLEY CONSTRUCTION COMPANY
发明人
EARL G. WHELPLEY
分类号
主分类号
代理机构
代理人
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